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Finding the Fourth Proportional to 54,335.10, 81,393.30 and 36,620.40

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Solution

The fourth proportional to 54,335.10, 81,393.30 and 36,620.40 is: 54,856.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,335.10 : 81,393.30 = 36,620.40 : x
  2. Step 2: Convert to fraction form
    54,335.10/81,393.30 = 36,620.40/x
  3. Step 3: Cross multiply
    54,335.10x = 81,393.30 × 36,620.40
  4. Step 4: Simplify right side
    54,335.10x = 2,980,655,203.32
  5. Step 5: Solve for x
    x = 2,980,655,203.32/54,335.10
  6. Step 6: Final answer
    x = 54,856.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.